Yes and no.
Pokemon never really went away. My 8 y/o son got into when he was about 6 because other kids brought the cards to summer camp. I grabbed some cards off of ebay and would use them as an inexpensive bribe for doing what he's supposed to do. My daughter has become extremely interested in Pokemon in the last few months. I think it's a combo of the shows being available, the new card series like the GX, and the new and old Pokemon video games. It doesn't hurt that most of these characters are incredibly cute. I'm not sure what is behind the resurgence other than continued interest. My daughter says that several of her friends collect Pokemon cards.
Before Covid happened, my local comic book shop was going to start a Sunday Pokemon kids' league. I'm hoping that eventually after Covid that we can get this started up.